improved error checking and some fixes

[openssl.git] / crypto / asn1 / a_bitstr.c

diff --git a/crypto/asn1/a_bitstr.c b/crypto/asn1/a_bitstr.c
index f621426d6f572a9d7d967d051bb245b143446cd3..0fb9ce0c2aea189ce384b988361b868d758f9efa 100644 (file)
--- a/crypto/asn1/a_bitstr.c
+++ b/crypto/asn1/a_bitstr.c
@@ -183,9 +183,11 @@ int ASN1_BIT_STRING_set_bit(ASN1_BIT_STRING *a, int n, int value)
        iv= ~v;
        if (!value) v=0;
 
+       if (a == NULL)
+               return 0;
+
        a->flags&= ~(ASN1_STRING_FLAG_BITS_LEFT|0x07); /* clear, set on write */
 
-       if (a == NULL) return(0);
        if ((a->length < (w+1)) || (a->data == NULL))
                {
                if (!value) return(1); /* Don't need to set */